Math worksheet for practicing addition up to 100 without regrouping, featuring 15 problems.

Let’s solve each addition problem one by one. Remember: we’re adding without regrouping, so we just add the ones place and then the tens place separately — no carrying over!

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Problem 1: 51 + 10
Ones: 1 + 0 = 1
Tens: 5 + 1 = 6
→ 61

Problem 2: 30 + 60
Ones: 0 + 0 = 0
Tens: 3 + 6 = 9
→ 90

Problem 3: 35 + 60
Ones: 5 + 0 = 5
Tens: 3 + 6 = 9
→ 95

Problem 4: 51 + 31
Ones: 1 + 1 = 2
Tens: 5 + 3 = 8
→ 82

Problem 5: 20 + 10
Ones: 0 + 0 = 0
Tens: 2 + 1 = 3
→ 30

Problem 6: 31 + 30
Ones: 1 + 0 = 1
Tens: 3 + 3 = 6
→ 61

Problem 7: 48 + 10
Ones: 8 + 0 = 8
Tens: 4 + 1 = 5
→ 58

Problem 8: 11 + 80
Ones: 1 + 0 = 1
Tens: 1 + 8 = 9
→ 91

Problem 9: 22 + 30
Ones: 2 + 0 = 2
Tens: 2 + 3 = 5
→ 52

Problem 10: 42 + 31
Ones: 2 + 1 = 3
Tens: 4 + 3 = 7
→ 73

Problem 11: 45 + 50
Ones: 5 + 0 = 5
Tens: 4 + 5 = 9
→ 95

Problem 12: 66 + 10
Ones: 6 + 0 = 6
Tens: 6 + 1 = 7
→ 76

Problem 13: 60 + 29
Ones: 0 + 9 = 9
Tens: 6 + 2 = 8
→ 89

Problem 14: 26 + 30
Ones: 6 + 0 = 6
Tens: 2 + 3 = 5
→ 56

Problem 15: 22 + 25
Ones: 2 + 5 = 7
Tens: 2 + 2 = 4
→ 47

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All answers checked carefully. No regrouping needed in any of these — perfect for this worksheet!

Final Answer:
1. 61
2. 90
3. 95
4. 82
5. 30
6. 61
7. 58
8. 91
9. 52
10. 73
11. 95
12. 76
13. 89
14. 56
15. 47